When people talk about Korean culture today, they usually begin with what the world can see: K-pop stages, dramas, street food, cosmetics, smartphones, fashion and the restless speed of Seoul. Korea is "energetic, digital, stylish and fast." However, another Korea exists behind this bright image. It is smaller, quieter and more enclosed. It is the Korea of rooms. The Korean word "bang" means room, and it appears everywhere: "PC bang" (internet cafes), "noraebang" (singing rooms), "jjimjilbang" (saunas), "manhwabang" (comic book libraries) and more. These are not minor details of urban life. Much of modern Korea life is not lived in broad public squares but the small rooms rented by the hour, shared with friends or occupied alone. To understand Korea only through its global performances is to miss this hidden architecture of daily life. This room culture grew out of density, competition, limited private space and organized urban life. In crowded cities, where many families live in apartments, commercial rooms become temporary extensions of the self. A PC bang is not simply a place to use a